codemods_blog_2.js

const transformer = (file, api) => {
   const j = api.jscodeshift;
   const root = j(file.source);

   const multiLineArrays = path => {
      const { loc } = path.node;
      return loc.start.line < loc.end.line;
   }

   return root
      .find(j.ArrayExpression)
      .filter(multiLineArrays)
      .forEach(path => path.node.original = null)
      .toSource({ trailingComma: 1, wrapColumn: 1});
}